Structure 24C0546 · Sacramento County, CA

Folsom Lake Crssng over American River

Carries Folsom Lake Crssng over American River, By Folsom-auburn RD & Dam.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT970 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 7/9

970 ft end to end, longest span 430 ft: about 2.7 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a segmental box-girder bridge.

Built200917 years old
Length970.1 ft295.7 m
Daily traffic19,500counted 2016
Last inspectedMarch 2023every 24 months

Location

StateCalifornia
CountySacramento
LocationBy Folsom-auburn RD & Dam
CarriesFolsom Lake Crssng
CrossesAmerican River
Coordinates38.70454, -121.16567

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignSegmental Box Girder
Total Length970.1 ft (295.7 m)
Max Span429.8 ft (131 m)
Deck Width82.3 ft (25.1 m)
Deck Area7422.1 sq m
Main Spans3
Year Built2009

Traffic

Avg Daily Traffic19,500 (2016)
Truck Traffic3%
Lanes On Bridge4

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number24C0546

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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